A crimping tool for fine stainless steel guide wire and sleeve and a crimping method thereof

Abstract

The present invention provides a tool for crimping a fine stainless steel guidewire and a cannula. The tool comprises a central shaft seat vertically mounted on a support frame, and a crimping sleeve sleeved on one end of the central shaft seat. A limiting sleeve and a crimping cavity are embedded in the end of the central shaft seat near the crimping sleeve. The crimping cavity is located at the front end of the limiting sleeve, and a positioning guide groove is provided in the limiting sleeve. Several clamping blocks are movably embedded in the central shaft seat and can be opened and closed relative to the crimping cavity. Several clamping blocks are arranged on the periphery of the outer end of the limiting sleeve. The crimping sleeve is provided with through holes corresponding to the positioning guide grooves. The present invention discloses a tool for crimping a fine stainless steel guidewire and a cannula that is convenient to operate and provides stable crimping.

Description

Technical Field

[0001] The present invention relates to the field of production and processing, and in particular to a crimping tool for a fine stainless steel guide wire and a sleeve. Background Art

[0002] Precision machining requires the assembly and installation of a metal wire and a metal tube. During the machining process, the wire is threaded through the metal tube and the overlapping ends of the tube and wire are pressed together. The prior art uses manual tapping and pressing. The prior art mechanical machining structure is not convenient for positioning and pressing the overlapping ends of the metal tube and wire, and lacks a convenient integrated loading and pressing mechanism. Summary of the Invention

[0003] The present invention overcomes the shortcomings of the prior art and provides a crimping tool for a fine stainless steel guide wire and a cannula, which is convenient to operate and has stable pressing.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a crimping tool for a fine stainless steel guide wire and a sleeve, comprising a central shaft seat vertically arranged on a support frame, and a buckling sleeve mounted on one end of the central shaft seat, a limiting sleeve and a crimping cavity are embedded in the end of the central shaft seat close to the buckling sleeve, the crimping cavity is located at the front end of the limiting sleeve, and a positioning guide groove is provided in the limiting sleeve; a plurality of clamping blocks that can open and close relative to the crimping cavity are movably embedded in the central shaft seat, and a plurality of the clamping blocks are arranged on the periphery of the outer end of the limiting sleeve; the buckling sleeve is provided with a through hole corresponding to the positioning guide groove.

[0005] In a preferred embodiment of the present invention, one end of the central shaft seat is passed through and fixed on the support frame, an axial hole is provided in the central shaft seat, a limiting sleeve is provided at one end of the axial hole, a positioning guide groove is provided in the limiting sleeve, and a guide wire limiting rod for abutting against the positioning guide groove is provided at the other end of the axial hole.

[0006] In a preferred embodiment of the present invention, a plurality of sliding grooves corresponding to the limiting sleeves are provided on the central shaft seat, the clamping block is movably embedded in the sliding groove, an elastic reset part is provided between one end of the clamping block and the central shaft seat, and an extrusion head is provided at the other end of the clamping block.

[0007] In a preferred embodiment of the present invention, the extrusion head is located outside the limiting sleeve, and an extrusion gap is reserved between the extrusion head and the outer end of the limiting sleeve.

[0008] In a preferred embodiment of the present invention, a gradually inclined guide groove is provided inside one end of the buckling sleeve corresponding to the central shaft seat; a plurality of receiving grooves are provided on the outside of the clamping block, and a plurality of movable pressing parts are movably embedded in the receiving grooves, and the movable pressing parts protrude from one end of the receiving groove and abut against the guide groove.

[0009] In a preferred embodiment of the present invention, the movable pressing portion is a sphere; and a groove for limiting the position of the sleeve is provided in the positioning guide groove.

[0010] In a preferred embodiment of the present invention, the guide groove is a funnel-shaped structure, and the outward divergence direction of the guide groove is consistent with the direction in which the pressing sleeve is mounted relative to the central shaft seat.

[0011] In a preferred embodiment of the present invention, the two ends of the central shaft seat are respectively a mounting end and an extrusion end, the mounting end is fixedly mounted on the support frame, the extrusion end is butt-jointed and embedded with the pressing sleeve, and a through-hole limit baffle is provided on the outside of the extrusion end; the pressing sleeve is movably limited between the limit baffle and the mounting end;

[0012] A docking section is provided between the mounting end and the extrusion end, an internal thread is provided inside the pressing sleeve, an external thread is provided outside the docking section, and the pressing sleeve and the docking section are sleeved and screwed together.

[0013] In a preferred embodiment of the present invention, a limiting boss is reserved between the docking section and the mounting end; a limiting groove corresponding to the limiting boss is provided in the buckling sleeve; and a movable spacing is reserved between the limiting boss and the limiting groove.

[0014] In a preferred embodiment of the present invention, an introduction sleeve corresponding to the extrusion head and the limit sleeve is embedded in the extrusion end, and a guide groove 1 corresponding to the positioning guide groove is provided in the introduction sleeve; a limit baffle is provided outside the extrusion end for limiting the position against the introduction sleeve and the buckling sleeve, and a guide groove 2 corresponding to the guide groove 1 is provided on the limit baffle.

[0015] In a preferred embodiment of the present invention, a processing method for a tool for crimping a fine stainless steel guide wire and a cannula, a tool for crimping a fine stainless steel guide wire and a cannula, and a processing method for crimping a cannula and a guide wire inserted into the cannula;

[0016] Step 1: Rotate the pressing sleeve outward relative to the central shaft seat, so that the pressing sleeve and the central shaft seat are displaced outward relative to each other, and release the clamping block to reset;

[0017] Step 2: Insert the sleeve and the guide wire inserted into the guide sleeve into the positioning guide groove of the limit sleeve in the central shaft seat from the outside, so that the end of the guide wire abuts against the guide wire limit rod and the end of the sleeve abuts against the groove provided in the positioning guide groove;

[0018] Step three: rotate the pressing sleeve inward relative to the central shaft seat, so that the pressing sleeve and the central shaft seat are displaced inward relative to each other. As the depth of the guide groove pressing against the movable pressing portion increases, the multiple clamping blocks in different directions are forced to press the elastic reset member, and the elastic reset member is deformed. The clamping heads of the multiple clamping blocks in different directions apply force to the sleeve to press the sleeve and the guide wire inside the sleeve.

[0019] Step 4: retract and rotate the buckle pressing sleeve outward, so that the buckle pressing sleeve moves outward relative to the central shaft seat, the guide groove retreats outward relative to the movable pressing part, the elastic reset part recovers, and the clamping block is released to reset.

[0020] The present invention solves the defects existing in the technical background, and the beneficial technical effects of the present invention are:

[0021] First, the sleeve and the guide wire inserted into the guide sleeve are crimped by the relatively sleeved central shaft seat and the buckling sleeve, and the clamping block movably arranged inside the central shaft seat.

[0022] Secondly, the positioning and limiting sleeve and the guide wire inserted into the guide sleeve are positioned by the inserted limiting sleeve.

[0023] Third, multiple clamping blocks arranged relatively to each other are used to realize multi-angle crimping operations, and the buckling sleeve is used to move back and forth relative to the central shaft seat to drive the displacement of the guide groove in the buckling sleeve. By adjusting the relative position of the guide groove and the movable pressing part, the extrusion force of the movable pressing part is driven to make the clamping block perform a reciprocating clamping action, and the elastic reset part arranged between the clamping block and the central shaft seat is used to realize the functions of elastic reset and elastic support.

[0024] Fourth, the function of positioning and guiding the material is achieved by the mutual docking of the guide groove 1, the guide groove 2 and the positioning guide groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention will be further described below with reference to the accompanying drawings and examples.

[0026] Figure 1 is a schematic cross-sectional view of a preferred embodiment of the present invention when disassembled;

[0027] Figure 2 This is a schematic cross-sectional view of the structure of the preferred embodiment of the present invention when assembled;

[0028] Figure 3 The present invention Figure 2 A schematic diagram of the enlarged structure of the middle part A;

[0029] Figure 4 This is a schematic diagram of the axial structure of the preferred embodiment of the present invention when assembled;

[0030] Figure 5This is a schematic diagram of the axial structure of the central shaft seat in a preferred embodiment of the present invention;

[0031] Figure 6 Schematic diagram of changes before and after compression molding in a preferred embodiment of the present invention;

[0032] The meaning of the reference numerals in the figure: 1-support frame, 11-base, 12-vertical plate, 121-positioning hole, 2-center shaft seat, 20-extrusion end, 201-slide groove, 21-axis hole, 22-mounting boss, 23-limiting boss, 24-docking section, 241-external thread, 25-guide wire limiting rod, 26-limiting sleeve, 261-positioning guide groove, 3-buckle sleeve, 31-guide groove, 32-handle, 33-introduction sleeve, 331-guide groove one, 4-elastic reset member, 5-movable pressing part, 6-clamping block, 7-limiting baffle, 71-guide groove two, 8-sleeve, 9-guide wire. DETAILED DESCRIPTION

[0033] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. These drawings are simplified schematic diagrams that only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0034] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, bottom, top, etc.), the directional indications are only used to explain the relative positional relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly. The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. Unless otherwise clearly specified and defined, the terms "set", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be a communication between the internal parts of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] Example 1

[0036] like Figures 1 to 6 As shown, a crimping tool for a fine stainless steel guide wire 9 and a sleeve 8 includes a support frame 1, the support frame 1 includes a base 11, and a vertical plate 12 vertically arranged on the base 11, the vertical plate 12 is provided with a horizontally penetrated positioning hole 121, the positioning hole 121 is penetrated and fixed with a central shaft seat 2, and the central shaft seat 2 is perpendicular to the vertical plate 12.

[0037] The two ends of the central shaft seat 2 are respectively a mounting end and an extrusion end 20. The mounting end is inserted into the positioning hole 121 of the vertical plate 12 of the support frame 1, and a mounting boss is provided on the mounting end. The mounting boss is assembled and fixed to the vertical plate 12 by a screw. The extrusion end 20 of the central shaft seat 2 is movably sleeved with a pressing sleeve 3. The extrusion end 20 and the pressing sleeve 3 are docked and embedded. The pressing sleeve 3 is provided with a through hole corresponding to the positioning guide groove 261. A central limit baffle 7 is provided on the outside of the extrusion end 20; the pressing sleeve 3 is movably limited between the limit baffle 7 and the mounting end, and a docking section 24 is provided between the mounting end and the extrusion end 20. The pressing sleeve 3 is provided with an internal thread, and the docking section 24 is provided with an external thread 241. The pressing sleeve 3 and the docking section 24 are sleeved and screwed together. A limiting boss 23 is reserved between the docking section 24 and the mounting end; a limiting groove corresponding to the limiting boss 23 is provided in the buckling sleeve 3; and a movable spacing is reserved between the limiting boss 23 and the limiting groove.

[0038] An axial hole 21 is provided through the central shaft seat 2. A limiting sleeve 26 is embedded in one end of the axial hole 21, near the extrusion end 20 of the pressing sleeve 3. A guide wire limiting rod 25 is provided at the other end of the axial hole 21, which is used to abut against the positioning guide groove 261. A positioning guide groove 261 is provided through the limiting sleeve 26. A gradually converging conical groove is provided in the outer end of the positioning guide groove 261. The groove is used for both guidance and to limit the end position of the introduced cannula 8.

[0039] An introduction sleeve 33 is embedded within the extrusion end 20, corresponding to the extrusion head and the limiting sleeve 26. A guide groove 1 331 is provided within the introduction sleeve 33, corresponding to and communicating with the positioning guide groove 261. A limiting baffle 7 is provided on the exterior of the extrusion end 20, restraining the introduction sleeve 33 and the pressing sleeve 3. The limiting baffle 7 includes a guide groove 21 corresponding to the guide groove 1 331. The centers of the guide groove 1 331, the guide groove 21 71 , and the positioning guide groove 261 are aligned, forming an embedding path. Furthermore, the guide grooves 1 331 , 71 71 , and the positioning guide groove 261 are funnel-shaped structures that taper toward the insertion direction. A crimping cavity is reserved between the introduction sleeve 33 and the limiting sleeve 26.

[0040] Four groups of clamping blocks 6 that can open and close relative to the crimping cavity are movably embedded in the center shaft seat 2. The four groups of clamping blocks 6 that can open and close relative to each other are arranged on the periphery of the outer end of the limiting sleeve 26, and the clamping blocks 6 correspond to the crimping cavity. However, this is not limited to this. The number of clamping blocks 6 is set according to the actual crimping needs. The center shaft seat 2 is provided with a plurality of slide grooves 201 corresponding to the crimping cavity. The slide grooves 201 are movably embedded with clamping blocks 6. An elastic reset member 4 is provided between one end of the clamping block 6 and the center shaft seat 2, and an extrusion head located in the crimping cavity is provided at the other end of the clamping block 6. The extrusion head is located on the outside of the limiting sleeve 26, and an extrusion gap is reserved between the extrusion head and the outer end of the limiting sleeve 26.

[0041] An inclined and gradually narrowing guide groove 31 is provided inside the end of the pressing sleeve 3 corresponding to the central shaft seat 2; the guide groove 31 is a funnel-shaped structure, and the direction in which the guide groove 31 diverges outward is consistent with the direction in which the pressing sleeve 3 is sleeved relative to the central shaft seat 2. A receiving groove is provided on the outside of each clamping block 6, and a movable pressing portion 5 is embedded in the receiving groove, and the movable pressing portion 5 is a sphere. The movable pressing portion 5 protrudes from one end of the receiving groove and movably abuts against the guide groove 31. Furthermore, in order to facilitate the application of force to the pressing sleeve, a plurality of handles 32 are provided on the outside of the pressing sleeve 3, and the plurality of handles 32 are evenly distributed at a plurality of different angles of the pressing sleeve 3.

[0042] Example 2

[0043] A processing method for a fine stainless steel guide wire and sleeve crimping tooling, wherein the fine stainless steel guide wire and sleeve crimping tooling is used to crimp a sleeve 8 and a guide wire 9 inserted into the sleeve 8; wherein the guide tube 8 is a steel tube; and the guide wire 9 is a stainless steel guide wire.

[0044] Step 1: Rotate the pressing sleeve 3 outward relative to the central shaft seat 2, so that the pressing sleeve 3 and the central shaft seat 2 are displaced outward relative to each other, and release the clamping block 6 to reset;

[0045] Step 2: Insert the sleeve 8 and the guide wire 9 inserted into the guide sleeve from the outside into the positioning guide groove 261 of the limiting sleeve 26 in the central shaft seat 2. The end of the guide wire 9 abuts against the guide wire limiting rod 25 for limiting position, and the end of the sleeve 8 abuts against the groove provided in the positioning guide groove 261.

[0046] Step 3: Rotate the pressing sleeve 3 inward relative to the central shaft seat 2, so that the pressing sleeve 3 and the central shaft seat 2 are displaced inward relative to each other. As the depth of the guide groove 31 pressing against the movable pressing portion 5 increases, the multiple clamping blocks 6 in different directions are forced to press the elastic reset member 4, and the elastic reset member 4 is deformed. The clamping heads of the multiple clamping blocks 6 in different directions apply force to the sleeve 8, pressing the sleeve 8 and the guide wire 9 inside the sleeve 8;

[0047] Step 4: retract the pressing sleeve 3 outwards so that the pressing sleeve 3 moves outwards relative to the central shaft seat 2, the guide groove 31 retracts outwards relative to the movable pressing portion 5, the elastic reset member 4 recovers, and the clamping block 6 is released to reset.

[0048] Working principle of the present invention:

[0049] like Figures 1 to 6As shown, hold the handle 32 and rotate the buckle sleeve 3 relative to the center shaft seat 2. Rotate the buckle sleeve 3 in the opposite direction outward relative to the center shaft seat 2, so that the buckle sleeve 3 and the center shaft seat 2 are displaced outward relative to each other, releasing the clamping block 6 to reset. Insert the sleeve 8 from the outside into the guide groove 2 71 of the limit baffle 7, the guide groove 1 331 in the center shaft seat 2, and the groove in the positioning guide groove 261. After the guide wire 9 is inserted into the sleeve 8 and introduced into the positioning guide groove 261, it is pressed against the guide wire limiting rod 25 that abuts against the end of the positioning guide groove 261. The end of the guide wire 9 abuts against the guide wire limiting rod 25 for a limit, and the end of the sleeve 8 abuts against the groove set in the positioning guide groove 261.

[0050] Holding the handle 32, the pressing sleeve 3 is rotated relative to the central shaft seat 2, and the pressing sleeve 3 is rotated inward relative to the central shaft seat 2, so that the pressing sleeve 3 and the central shaft seat 2 are displaced inward relative to each other. As the depth of the guide groove 31 pressing against the movable pressing portion 5 increases, the multiple clamping blocks 6 in different directions are forced to squeeze the elastic reset member 4, the elastic reset member 4 is deformed, and the chucks of the multiple clamping blocks 6 in different directions apply force to the sleeve 8, pressing the sleeve 8 and the guide wire 9 inside the sleeve 8. The pressing sleeve 3 is unrotated outward, so that the pressing sleeve 3 is displaced outward relative to the central shaft seat 2, the guide groove 31 is retracted outward relative to the movable pressing portion 5, the elastic reset member 4 is restored, the clamping blocks 6 are released to reset, and the crimped sleeve 8 and guide wire 9 are removed.

[0051] The above specific implementation methods are specific support for the scheme ideas proposed in the present invention, and cannot be used to limit the scope of protection of the present invention. Any equivalent changes or equivalent modifications made on the basis of this technical scheme in accordance with the technical ideas proposed in the present invention still fall within the scope of protection of the technical scheme of the present invention.

Claims

1. A crimping tool for a fine stainless steel guide wire and a cannula, comprising a central shaft seat vertically arranged on a support frame, and a buckling sleeve sleeved on one end of the central shaft seat, characterized in that: A limiting sleeve and a crimping cavity are embedded in one end of the central shaft seat close to the buckling sleeve, and the crimping cavity is located at the front end of the limiting sleeve; a plurality of clamping blocks that can be opened and closed relative to the crimping cavity are movably embedded in the central shaft seat, and a plurality of the clamping blocks are arranged on the periphery of the outer end of the limiting sleeve; the buckling sleeve is provided with a through hole corresponding to the positioning guide groove; One end of the central shaft seat is fixed on the support frame, an axial hole is provided in the central shaft seat, a limiting sleeve is provided at one end of the axial hole, a positioning guide groove is provided in the limiting sleeve, and a guide wire limiting rod for abutting against the positioning guide groove is provided at the other end of the axial hole; An inclined and gradually narrowing guide groove is provided inside one end of the buckling sleeve corresponding to the central shaft seat; a plurality of receiving grooves are provided on the outside of the clamping block, and a plurality of movable pressing parts are movably embedded in the receiving grooves, and one end of the movable pressing part protrudes from the receiving groove and abuts against the guide groove; The central shaft seat is provided with a plurality of slide grooves corresponding to the limit sleeves, the clamping block is movably embedded in the slide groove, an elastic reset member is provided between one end of the clamping block and the central shaft seat, and the other end of the clamping block is provided with an extrusion head located in the crimping cavity; The extrusion head is located outside the limiting sleeve, and an extrusion gap is reserved between the extrusion head and the outer end of the limiting sleeve; The movable pressing portion is a sphere; a groove for limiting the position of the sleeve is provided in the positioning guide groove.

2. The crimping tool for a fine stainless steel guide wire and a cannula according to claim 1, characterized in that: The guide groove is a funnel-shaped structure, and the outward diverging direction of the guide groove is consistent with the direction in which the buckling sleeve is sleeved relative to the central shaft seat.

3. The crimping tool for a fine stainless steel guide wire and a cannula according to claim 1, characterized in that: The two ends of the central shaft seat are respectively a mounting end and an extrusion end, the mounting end is fixedly mounted on the support frame, the extrusion end is butted and embedded with the buckling sleeve, and a through-hole limit baffle is provided on the outside of the extrusion end; the buckling sleeve is movably limited between the limit baffle and the mounting end; A docking section is provided between the mounting end and the extrusion end, an internal thread is provided inside the pressing sleeve, an external thread is provided outside the docking section, and the pressing sleeve and the docking section are sleeved and screwed together.

4. The crimping tool for a fine stainless steel guide wire and a cannula according to claim 3, characterized in that: A limiting boss is reserved between the docking section and the mounting end; a limiting groove corresponding to the limiting boss is provided in the pressing sleeve; and a movable spacing is reserved between the limiting boss and the limiting groove.

5. A method for processing a crimping tool for a fine stainless steel guide wire and a cannula, characterized in that: A processing method for crimping a casing and a stainless steel guide wire inserted into the casing using the crimping tool for crimping a fine stainless steel guide wire and a casing as described in any one of claims 1 to 4; Step 1: Rotate the pressing sleeve outward relative to the central shaft seat, so that the pressing sleeve and the central shaft seat are displaced outward relative to each other, and release the clamping block to reset; Step 2: Insert the sleeve and the stainless steel guide wire inserted into the guide sleeve into the positioning guide groove of the limit sleeve in the central shaft seat from the outside, so that the end of the stainless steel guide wire abuts against the guide wire limit rod and the end of the sleeve abuts against the groove set in the positioning guide groove; Step three: rotate the pressing sleeve inward relative to the central shaft seat, so that the pressing sleeve and the central shaft seat are displaced inward relative to each other. As the depth of the guide groove pressing against the movable pressing portion increases, the multiple clamping blocks in different directions are forced to press the elastic reset member, and the elastic reset member is deformed. The extrusion heads of the multiple clamping blocks in different directions apply force to the sleeve, pressing the sleeve and the stainless steel guide wire inside the sleeve; Step 4: retract and rotate the buckle pressing sleeve outward, so that the buckle pressing sleeve moves outward relative to the central shaft seat, the guide groove retreats outward relative to the movable pressing part, the elastic reset part recovers, and the clamping block is released to reset.

Images